On 4/26/12, Alex <creamyfish@xxxxxxxxx> wrote: > Yes if we can't make reading as fast as writing. But in general having a > disk with write speed faster than read speed might still be an interesting > choice for applications with a lot of disk write. Pardon me if I might be missing something here. The proposition here is that with the laser writing technique, we can increase the data rate by having new type write heads which swivel instead of the traditional moving head over rotating platter isn't it? But since we cannot do the same for reading, we are stuck with the traditional head/platter mechanism. How would the write speed increase independently of the RPM x density general case? It seems to me that we cannot expect a breakthrough in write/read without a fundamental improvement in the read function. It's like we have two person in a car, one collecting payment while one gives out goods. Now we increase the speed of the guy giving out goods (writing) but the total number units moved will still be the same because the car can't go any faster than the guy collecting payment (reading). Only difference is that the write head has more idle time between bits? Unless we are suggesting a hybrid system which has an independent swiveling write head and a traditional read head? But that sounds overly complicated and unlikely to work. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
